I would say because at this point the Grand Supreme Kai is a concept only related to U7. The other universes don't seem to have multiple Supreme Kais. For example, only Gowasu and his apprentice Zamasu (who was previously a North Kai) lived in the Sacred World of U10, there were no other Supreme Kais to be seen in the vicinity.DiscountDabi wrote: ↑Sun Nov 08, 2020 7:57 pmYou know this whole conversation has made me question why the Supreme Kai’s life is tied to that universes God of Destruction and not the Grand Supreme Kai. All logic should point towards the grand supreme kai’s life being tied to Beerus’s and not Shins.
The only reason I can conclude is that the whole thing is simply a plot device to allow Black and Zamasu to kill all the Gods without actually being on Beerus’s level
Perhaps Zeno or the Grand Priest decided to send more Supreme Kais to U7 because they foresaw the high number of threats U7 would go through. Frieza's criminal empire, the Androids, Majin Buu, Moro... No other universe has had as many threats to the world and Gods as U7. Perhaps Zeno or the Grand Priest felt that more divine presence was required in that universe, hence why only U7 has multiple Supreme Kais and a Grand Supreme Kai.
This isn't a plot device however. Beerus and Shin were already dead in the Future timeline. Shin died against Majin Buu, so Beerus and Whis were gone too. That's the reason why Zamasu decided to go to the Future Trunks timeline. He wouldn't have had to deal with a GoD anyway.